From what I can see, the pillow looks abit hard to me. Like its a rock or something. Maybe round off the edges alittle? To give it that 'soft' look. The shadows look abit hard to me. The light bulb, its semi-transparent. All the light bulbs Ive seen, are white. Thats all I can see. Like the others said, just add some more light to the scene, and we'll be able to see whats going on. Just some constructive C&C.